What Are the Minimum Thickness Specs for a Front Brake Rotor?

By Staff WriterLast Updated Mar 27, 2020 4:21:38 AM ET

Brake rotor thickness requirements vary by vehicle make, model and year, but the minimum allowable thickness is always cast on an unmachined surface, or alternate part, of the rotor. A technician must remove the wheel and use a micrometer on the rotor to measure its thickness accurately.

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